Device and method

• US 10,225,857 B2
• Filed: 06/22/2015
• Issued: 03/05/2019
• Est. Priority Date: 08/29/2014
• Status: Expired due to Fees

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Takano, Hiroaki
• Primary Examiner(s): Nguyen, Thai
• Application Number:
  US15/505,133
• Publication Number:
  US 20170257880A1
• Time in Patent Office: 1,352 Days
• CPC Class Codes: H04L 1/1822 involving configuration of automatic repeat request [ARQ] with parallel processes
• CPC Class Codes: H04L 1/1887 Scheduling and prioritising arrangements
• CPC Class Codes: H04L 1/1893 Physical mapping arrangements physical resource mapping in general H04L5/00
• CPC Class Codes: H04L 1/1896 ARQ related signaling
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 28/04 Error control
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/1273 of downlink data flows
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 88/10 adapted for operation in multiple networks, e.g. multi-mode access points

Abstract

Provided is a device, including: a control unit configured to control transmission of downlink data in a manner that the transmission of the downlink data is performed using a first frequency band shared by a plurality of wireless communication systems including a cellular system. The control unit controls retransmission of the downlink data in a manner that the retransmission of the downlink data is performed using a second frequency band for the cellular system.

Claims

1. A device, comprising:

at least one processor configured to;

control transmission of downlink data based on a first allocation of a first frequency band,

wherein the transmission of the downlink data is within a first time period, and

wherein the first frequency band is a shared band shared by a plurality of wireless communication systems including a cellular system;

determine an acknowledgement related to reception of the downlink data is received; and

control retransmission of the downlink data based on a second allocation of a second frequency band, and a determination of a lack of reception of the acknowledgement,

wherein the retransmission of the downlink data occurs within a second time period,

wherein a start time of the second time period starts before an end time of the first time period and the retransmission of the downlink data on the second frequency band is executed before release of the first frequency band, and

wherein the second frequency band is a licensed band for the cellular system.

2. The device according to claim 1, wherein the at least one processor is further configured to:

control transmission of downlink control information, indicating that the transmission of the downlink data, to a terminal device based on the first allocation of the first frequency band.

3. The device according to claim 2,

wherein the downlink control information is information based on a format, and

wherein the format includes a first field that indicates the shared band used for the transmission of the downlink data.

4. The device according to claim 3, wherein the at least one processor is further configured to notify the terminal device of at least two bit pattern candidates corresponding to the shared band included in the first field and shared frequency bands corresponding to the at least two bit patterns.

5. The device according to claim 3, wherein the format includes a second field that indicates a retransmission control process for the downlink data.

6. The device according to claim 5,

wherein the retransmission control process is a hybrid automatic repeat request (HARQ) process, and

wherein the second field is a HARQ process number field.

7. The device according to claim 3, wherein the format excludes a field that indicates whether resource allocation is for one of transmission of new data or for retransmission.

8. The device according to claim 1,

wherein the downlink data is transmitted to a terminal device that supports carrier aggregation,

wherein the first frequency band is a secondary component carrier for the terminal device, and

wherein the second frequency band is one of a primary component carrier or a secondary component carrier for the terminal device.

9. The device according to claim 1, wherein the first frequency band is a channel of a wireless local area network (LAN).

10. A method, comprising:

controlling, by at least one processor, transmission of downlink data based on a first allocation of a first frequency band,

wherein the transmission of the downlink data is within a first time period, and

wherein the first frequency band is a shared band shared by a plurality of wireless communication systems including a cellular system;

determining an acknowledgement related to reception of the downlink data is received; and

controlling, by the at least one processor, retransmission of the downlink data based on a second allocation of a second frequency band, and the determination of a lack of reception of the acknowledgement,

wherein the retransmission of the downlink data occurs within a second time period,

wherein a start time of the second time period starts before an end time of the first time period and the retransmission of the downlink data on the second frequency band is executed before release of the first frequency band, and

wherein the second frequency band is a licensed band for the cellular system.

11. A device, comprising:

at least one processor configured to;

control a first reception process based on transmission of downlink data by a base station,

wherein the transmission of the downlink data is based on a first allocation of a first frequency band,

wherein the transmission of the downlink data is within a first time period, and

wherein the first frequency band is a shared band shared by a plurality of wireless communication systems including a cellular system;

determine an acknowledgement of the reception of the downlink data is transmitted to the base station; and

control a second reception process based on retransmission of the downlink data by the base station,

wherein the retransmission of the downlink data is based on a second allocation of a second frequency band, and a determination of a lack of the transmission of the acknowledgement,

wherein the retransmission of the downlink data occurs within a second time period,

wherein a start time of the second time period starts before an end time of the first time period and the retransmission of the downlink data on the second frequency band is executed before release of the first frequency band, and

wherein the second frequency band is a licensed band for the cellular system.

12. The device according to claim 11, wherein the retransmission control process is a hybrid automatic repeat request (HARQ) process.

13. The device according to claim 11, wherein the at least one processor is further configured to receive downlink control information transmitted by the base station,

wherein the received downlink control information indicates the transmission of the downlink data is based on the first allocation of the first frequency band.

14. The device according to claim 13,

wherein the downlink control information is information based on a format, and

wherein the format includes a first field that indicates the shared band used for the transmission of the downlink data and a second field that indicates the retransmission of the downlink data.

15. The device according to claim 14,

wherein the format excludes a field that indicates whether resource allocation is for one of transmission of new data or for the retransmission, and

the at least one processor is further configured to determine that the resource allocation of the downlink control information is for the retransmission based the downlink control information.

16. A method, comprising:

controlling, by at least one processor, a first reception process based on transmission of downlink data by a base station,

wherein the transmission of the downlink data is based on a first allocation of a first frequency band,

wherein the transmission of the downlink data is within a first time period, and

wherein the first frequency band is a shared band shared by a plurality of wireless communication systems including a cellular system;

determining, by the at least one processor, an acknowledgement of the reception of the downlink data is transmitted to the base station; and

controlling, by the at least one processor, a second reception process based on retransmission of the downlink data by the base station,

wherein the retransmission of the downlink data is based on a second allocation of a second frequency band, and the determination of a lack of the transmission of the acknowledgement,

wherein the retransmission of the downlink data occurs within a second time period,

wherein a start time of the second time period starts before an end time of the first time period and the retransmission of the downlink data on the second frequency band is executed before release of the first frequency band, and

wherein the second frequency band is a licensed band for the cellular system.